PEI Tube

PEI Tube is a plastic tubing product offered in Goodfellow's range of tubes. With 14 variations, this tubing provides high heat resistance and chemical inertness for applications like medical devices, aerospace wiring, and automotive sensors. The polyetherimide polymer retains useful properties like impact strength and rigidity to 300°C. Goodfellow's selection of options makes this tubing versatile for routing wires, fluids, or gases in demanding environments.

Formula: PEI
Outside Diameter: 2.3mm
Wall Thickness: 0.7mm
Inside Diameter: 0.9mm
Length: 20mm
Colour: Clear Amber
CAS Number: 61128-46-9
UOM Code: 227-176-23

SKU: 1000073763

Product Code: EI31-TB-000100

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Tolerances

Tube

Outside Diameter	=<2mm	±10%
Outside Diameter	=<5mm	±10%
Outside Diameter	>5mm	±10%
Wall Thickness		±20%

Tolerances

Tube

Outside Diameter	=<2mm	±10%
Outside Diameter	=<5mm	±10%
Outside Diameter	>5mm	±10%
Wall Thickness		±20%

Technical Data Sheet

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Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good(-Fair?)
Acids - dilute	Good
Alcohols	Good
Alkalis	Good-Poor
Aromatic hydrocarbons	Poor
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Ketones	Poor

Electrical Properties

Element	Value
Dielectric constant @1kHz	3.1
Dissipation factor @ 1MHz	0.0013@1
Dielectric strength( kV mm⁻¹ )	30@1.6mm
Surface resistivity( Ohm/sq )	4.10¹³
Volume resistivity( Ohmcm )	7.10¹⁵

Physical Properties

Element	Value
Flammability	V-0 @ 0.4mm
Radiation resistance	Good
Resistance to Ultra-violet	Good/Fair
Limiting oxygen index( % )	47
Water absorption - equilibrium( % )	1.3
Water absorption - over 24 hours( % )	0.25
Density( gcm⁻³ )	1.27

Mechanical Properties

Element	Value
Hardness - Rockwell	R125
Poisson's ratio	0.44
Elongation at break( % )	60
Compressive modulus( GPa )	2.9
Tensile modulus( GPa )	2.9
Izod impact strength( J m⁻¹ )	50
Abrasive resistance - ASTM D1044( mg/1000 cycles )	10
Tensile strength( MPa )	85

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	200
Heat-deflection temperature - 1.8MPa( C )	190
Upper working temperature( C )	170-200
Specific heat( J K⁻¹ kg⁻¹ )	2000
Thermal conductivity( W m⁻¹ K⁻¹ )	0.22@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	56